Fix workspace schema caching when user is not logged in (#5173)

In this PR:
- Follow up on #5170 as we did not take into account not logged in users
- only apply throttler on root fields to avoid performance overhead

packages/twenty-server/src/engine/api/graphql/graphql-config/hooks/use-throttler.ts

@@ -40,6 +40,10 @@ export const useThrottler = (
       addPlugin(
         useOnResolve(async ({ args, root, context, info }) => {
           if (options.limit && options.ttl) {
+            if (root !== undefined) {
+              return;
+            }
+
             const id = options.identifyFn(context);
 
             const errorMessage = await context.rateLimiterFn(
@@ -47,7 +51,7 @@ export const useThrottler = (
               {
                 max: options?.limit,
                 window: `${options?.ttl}s`,
-                message: interpolate('Too much request.', {
+                message: interpolate('Too many requests.', {
                   id,
                 }),
               },